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BMS D704 for 38.4V 12S LiFePO4 Battery Packs (20A Charge, 40A Discharge)

1. Protection Circuit Board for 38.4V 12S LiFePO4 battery pack;
2. PCM applies for 12 cells LiFePO4 battery pack.
3. To prevent the battery packs from over charge, over discharge, over current, over temperature ,short circuit;
4. With cell balance/equilibrium function;
5. Compatible with LiFePO4 cells; 
6. How balancing function works? After battery pack is fully charged. PCM will detect each cell's voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps cells have longer service life.
7. PCM comes with all the voltage detection wires and connectors.
We keep materials in stock only, we need around 3-7 days for samples productions.

Sale Price:$
Quantity Amount
51-100 $52.29
101-200 $51.79
200+ $50.79
Weight:82g Model:
Total cost:

Quantity: (stock:

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Content Criterion
HCX-D704LF12S40A-04/184CJ 12S-40A working current
Charging voltage 43.2V
Maximal continuous charging current 20A
Maximal continuous discharging current 40A
Current consumption ≤50uA
Overcharge Protection
Over charge detection voltage 3.65±0.05V
Over charge detection delay time 200ms(max)
Over charge release voltage 3.65±0.1V
Over Discharge Protection
Over discharge detection voltage 2.50±0.1V
Over discharge detection delay time 120ms(max)
Over discharge release voltage 3.00±0.1V
Over Current Protection
(1st Protection)
Over current detection current/ Voltage 80A±10A / 0.15±0.02V
Detection delay time MAX20ms
Release condition Cut load / charge to recover
Short Circuit Protection
Short circuit detection current external resistance ≤ 0.1Ω
Detection delay time MAX320us
Detection condition Cut load/charge to recover
Balance voltage for single cell /
Balance current for single cell /
Temperature Protection
Temperature Switch Yes
Inner resistance ≤20mΩ
Operating temperature range 0~+85℃
Storage temperature range 0~+85℃